the submenu5 is for a special submenu layer... it must appear as a submenu and that's why i had to put it in an if clause...

still won't work.
i think the problem is that my div contains severeal ancors:
here's one of the layers that won't work:

#submenu1{
filter:alpha(opacity=80,style=0);
position:absolute;...

this is what i got:

function roll(id,h){
//menu = document.getElementById(id);
cont+=1;
document.getElementById(id).style.height = cont;
...